Password Utilities

Leetspeak Password

Transforms regular passwords into leetspeak by replacing letters with numbers and symbols (a→@, e→3, o→0, etc.). Access via MCP in Cursor or Windsurf for quick demos, or GET /v1/password/leetspeak for REST integration. Example: "password123" becomes "p@ssw0rd123". Purely for educational purposes — leetspeak doesn't improve actual security strength.

API Endpoint

GET /v1/password/leetspeak

Code Examples

curl "https://tinyfn.io/v1/password/leetspeak" \
  -H "X-API-Key: YOUR_API_KEY"
const response = await fetch('https://tinyfn.io/v1/password/leetspeak', {
  headers: { 'X-API-Key': 'YOUR_API_KEY' }
});
const data = await response.json();
console.log(data);
import requests

response = requests.get('https://tinyfn.io/v1/password/leetspeak',
    headers={'X-API-Key': 'YOUR_API_KEY'})
data = response.json()
print(data)

Use via MCP

Add to your AI agent

Connect your AI agent (Claude, Cursor, Windsurf, etc.) to TinyFn's password tools:

{
  "mcpServers": {
    "tinyfn-password": {
      "url": "https://tinyfn.io/mcp/password",
      "headers": {
        "X-API-Key": "YOUR_API_KEY"
      }
    }
  }
}

Learn more about MCP setup →

FAQ

How does leetspeak password conversion work?

Replaces common letters with visually similar numbers and symbols: a→@, e→3, i→1, o→0, s→$, t→7. The transformation is deterministic and reversible.

Can I use this MCP tool to generate secure passwords?

No, this is for demonstration only. Leetspeak doesn't increase entropy or security — it's just character substitution that attackers easily account for in password cracking.

What's the difference between this and actual password strengthening?

This performs cosmetic character replacement while real security comes from length, randomness, and unpredictability. Leetspeak is easily defeated by modern password crackers.

Does the REST API preserve the original password structure?

Yes, it maintains the same length and pattern — only substitutes specific characters. Uppercase, numbers, and special characters remain unchanged unless they match leetspeak rules.

What leetspeak substitutions are supported?

Standard mappings like a/A→@, e/E→3, i/I→1, o/O→0, s/S→$, t/T→7. The exact character set follows common leetspeak conventions used in demonstrations.

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